THE SECULAR VARIATION OF THE MAGNETIC ELEMENTS IN SOUTH AFRICA DURING THE PERIOD 1900–1913
Beattie, J. C.
Article
1914
Transactions of the Royal Society of South Africa
4
181--203
BioStor
English
Cape Town, Royal Society of South Africa,
BioStor: https://biostor.org/reference/167285 DOI: https://doi.org/10.1080/00359191409519530